The new Windows 8.1 update is part of the company’s regular Patch Tuesday rollout, and it’s currently available as a manual download to both 32-bit and 64-bit versions of Windows 8.1, CNET reveals, although it should also roll out automatically to users who have set up their machines to receive automatic updates. Unlike the major update from earlier this year, the August 12th release isn’t mandatory, but users are still encouraged to download and install it.